Zombies, Run! is a fairly popular Windows Phone app that mixed exercise with adventure. The developer has released a maintenance update for Zombies, Run! along with an announcement that they will no longer support the Windows Phone platform.
For those not familiar with Zombies, Run!, it's a running/jogging app where you listen to missions during your daily runs/walks that pits you against an angry hoard of zombies. As the mission progresses you earn or collect supplies. After your run, you use the supplies at your your base township. The town in turn uses the supplies to support growth and as your town grows, more missions become available. All totaled there are 35 missions with over 45 runs worth of game play. The concept was to have additional runs added but apparently that no longer is an option.